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<div class=Section1>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Two things to look at.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
lang=EN-US style='font-size:13.5pt'>WAN Considerations <o:p></o:p></span></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
name=wp1052185></a><a name=wp1052190></a><a name=wpmkr1059998></a>•<img
width=19 height=2 id="Picture_x0020_2" src="cid:image003.png@01C885DE.B01BB960"
alt="http://www.cisco.com/en/US/i/templates/blank.gif">Delay <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
name=wp1045877></a><span lang=EN-US>The maximum one-way delay between any
Unified CM servers for all priority ICCS traffic should not exceed
20 ms, or 40 ms round-trip time (RTT). Delay for other ICCS traffic
should be kept reasonable to provide timely database and directory access.
Measuring the delay is covered in </span><a
href="http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/5x/50models.html#wp1045925"><span
lang=EN-US>Delay Testing</span></a><span lang=EN-US>. Propagation delay between
two sites introduces 6 microseconds per kilometer without any other
network delays being considered. This equates to a theoretical maximum distance
of approximately 3000 km for 20 ms delay or approximately 1860 miles.
These distances are provided only as relative guidelines and in reality will be
shorter due to other delay incurred within the network. <o:p></o:p></span></p>
<p class=pbu1bullet1><span lang=EN-US>•</span><img border=0 width=19
height=2 id="Picture_x0020_5" src="cid:image003.png@01C885DE.B01BB960"
alt="http://www.cisco.com/en/US/i/templates/blank.gif"><span lang=EN-US>Every
10,000 busy hour call attempts (BHCA) between sites that are clustered over the
WAN requires 900 kbps of bandwidth for Intra-Cluster Communication
Signaling (ICCS). This is a minimum bandwidth requirement, and bandwidth is
allocated in multiples of 900 kbps. The ICCS traffic types are classified
as either priority or best-effort. Priority ICCS traffic is marked with IP
Precedence 3 (DSCP 24 or PHB CS3). Best-effort ICCS traffic is marked with IP
Precedence 0 (DSCP 0 or PHB BE). <o:p></o:p></span></p>
<p class=pbu1bullet1><a name=wp1046001></a><b><span lang=EN-US>•</span><img
border=0 width=19 height=2 id="Picture_x0020_6"
src="cid:image003.png@01C885DE.B01BB960"
alt="http://www.cisco.com/en/US/i/templates/blank.gif"></b><b><span lang=EN-US>The
minimum recommended bandwidth between sites that are clustered over the WAN is
1.544 Mbps. This amount allows for the minimum of 900 kbps for ICCS
and 644 kbps for database and other inter-server traffic</span></b><span
lang=EN-US>. <o:p></o:p></span></p>
<p class=pbu1bullet1><span lang=EN-US>And that is not counting actual Voice
traffic<o:p></o:p></span></p>
<p class=pbu1bullet1><span lang=EN-US>For more info.<o:p></o:p></span></p>
<p class=pbu1bullet1><span lang=EN-US><a
href="http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/5x/50models.html#wp1045846">http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/5x/50models.html#wp1045846</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jorge Rodríguez Aguila<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>CCNA,CCVP<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Senior Network Consultant<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Netxar Technologies<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>jorge.rodriguez@netxar.com<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Office 787-765-0058<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>PCS 787-688-8530<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img border=0 width=101 height=34 id="Picture_x0020_1"
src="cid:image004.png@01C885DE.B01BB960" alt=netxar><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=pbu1bullet1><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Ahmed Elnagar<br>
<b>Sent:</b> Friday, March 14, 2008 12:46 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] CM 5.x database replication<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p>
<div id=idOWAReplyText18173>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Dear
all;<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I
have a problem with CM 5.x, I have two servers clustered over the WAN (1 Mbps
connection WAN) and I had a problem on the subscibers as the phones registered
with it has different old DNs and I checked this and the conclusion was that
the Sub server has a DB image completely different from the one on the Pub.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I
want to rebuild the DB on the sub from scratch, anyway other than installing
the Sub server allover again to do so??<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Below
is the output of the show perf query<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><strong><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>On
the Publisher:</span></strong><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>admin:Show
perf query class "Number of Replicates Created and State of
Replication"<br>
==>query class :<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>-
Perf class (Number of Replicates Created and State of Replication) has
instances and values:<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>ReplicateCount
-> Number of Replicates Created = 348<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>ReplicateCount
-> Replicate_State = 2<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><strong><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>On
the Subscriber:</span></strong><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>admin:Show
perf query class "Number of Replicates Created and State of
Replication"<br>
==>query class :<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> -
Perf class (Number of Replicates Created and State of Replication) has
instances and values:<br>
ReplicateCount -> Number of Replicates
Created = 0<br>
ReplicateCount ->
Replicate_State
= 0<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Any
ideas???!!!!<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Express
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